I have a question about the STM32H743...
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‎2020-07-29 2:49 PM
If this device is powered-down (i..e voltage is 0 on all rails), what impedance will be presented by the Port pins? If a pin from a powered-down STM32H743 is connected to a pin on another (fully powered) device, what current drain will occur?
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STM32H7 Series
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‎2020-09-09 7:26 AM
The answer by @prain here is incorrect. You should mark Uwe Bonnes's answer as the right one.
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‎2020-09-09 7:39 AM
To TDK:
Yes, Uwe Bonnes' answer is correct.
This was confirmed by the 10Kohm series resistor measurement that you took.
I am interested in any additional data you could obtain by using a 100Kohm resistor or 1Mohm resistor in place of the 10Kohm resistor.

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